Category: Dream


2013-11-05 – EEG Waves

EEG Graph REM Sleep
I recorded with my halograph FM and EEG in parallel. The electrodes didn’t have the best contact, but they still picked up some interesting readings. I have been embedding the passive electrode in the headband by my temple – a lot more comfortable than the earlobe and it still picks up the eye movements.

The eight waves in the minute featured above seem to have repeated every hour, around the 50 minute mark, starting at 2 am. The relative quite in the accelerometer channel suggest that the waves aren’t artifacts. I might set an alarm for them one day.

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OpenEEG recording of a lucid dream
I had a rare natural lucid dream triggered by events inspired by the main theme of Bob DeNatale’s new film about lucid dreaming, The Art of Dreaming. I maintained lucidity for a good minute of human flight. The minute featured above shows a spike in the data that is otherwise flat, recorded at 0614, when I believe the dream occured. I was asleep from 0015 to 0640.

The algorithm didn’t trigger an audio track, as it was looking for multiple events like this in a row. I will update it to optionally trigger on only a single event, because of the vividness of the dream. The spike looks similar to when I open my eyes while awake.

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2013-05-31 – EEG Baseline

EEG Baseline
The minute above shows the “normal” EEG values when I am still. I can move my head around quite a lot without affecting the values. But as soon as I move or close my eyes, significant peaks can be seen like in the minute below that I recorded during my sleep at 0825.
EEG Eye Movements

I woke up at 0841 right out of a dream.

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2013-05-24 – Open Electroencephalography

OpenEEG Project - REM Sleep
A decade after I was able to afford my first printed circuit board from Olimex and started dabbling in the OpenEEG project, I finally managed to build a device with which I can comfortably record my brainwaves during sleep.

It took forever to fall asleep because I was just too excited. I woke up at 0534 from a dream and noted the time. The printout of the minute I selected is from 0515 and shows some very distinct patterns that are similar to when I move my eyes around while conscious. I will use that as a base to write the REM-detection algorithm that will trigger the audio tracks.

I embedded the four active electrodes inside a headband and taped the passive electrode to my earlobe with some duct tape. I still need to meditate on a more convenient way to attach the passive electrode.

It can be worn with the sensors on the forehead by the Frontal Lobe to trigger on the spikes in electrical activity caused by eye movements or at the back to monitor the brainwaves by the Occipital Lobe where visual perception is processed. Check it:
Halograph EEG

Anyone with a device compatible with the OpenEEG project can now upload to the Lucid Scribe Database project by right-clicking on a log in Lucid Scribe and selecting Export to -> LSDBase. The source code for the OpenEEG plugin is available on GitHub.

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REM Sleep After Ninety Minutes
The first audio track played exactly 90 minutes into the session and the movements lasted for the duration of the song. I was expecting the vocals to kick and was disappointed when they didn’t. I will have to cut them in as soon as possible. The second audio track played 65 minutes after that; six blinks can be seen in the minute above before it woke me up.

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2012-10-05 – Filtered Out

REM Sleep Graph
The respiratory artifact filter has been ignoring too many events that could have had potential, so I have some more tweaking to do. In the minute above there are over two dozen movements that failed to trigger the audio track.

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Eye Movements Dream
The audio track played after six blinks and the wave can be seen at the end again, as previously noted: 2012-06-14 – Aware-Wave.

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2012-08-12 – EEG Blinks

Rapid Eye Movements Electroencephalograph
After a few nights of recording brainwaves from the NeuroSky MindWave and some advice from a cognitive scientist, I was able to write an algorithm to detect REM sleep from the raw EEG data.

Thirteen blinks can be seen in the minute featured above. They look uncannily similar to the rapid eye movements previously recorded with the halograph FM. The audio track was triggered five times throughout the night and interrupted REM sleep at least once.

Also of interest is that the attention graph tends to spike during REM sleep, when the meditation graph tends to trough.

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Rapid Eye Movement Sleep
The audio tracks played three times during the night but ended the dreams each time. I woke up feeling very refreshed with the third song playing. Well over a dozen rapid eye movements can be seen in the featured minute.

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Rapid Eye Movement Chart Blinks
14 blinks can be seen in the minute featured above. This is right before the audio track played in the next minute and ended the dream, rather abruptly.

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